Microsoft gave notice this week that it's planning to update its Office 365 certificates later this month, and the update could affect some hybrid Exchange deployments.

The updates will affect the Microsoft Federation Gateway, which a service that brokers connections to Microsoft applications. The gateway provides a means for organizations to establish trust relations, such as sharing e-mails, for instance.

On Sept. 23, 2014, Microsoft is planning a certificate change to the Microsoft Federation Gateway. Organizations that have hybrid networks combining Office 365 services with Exchange Server or that use the Microsoft Federation Gateway to establish trust relationships need to set up a certificate update process before the Sept. 23 deadline to "avoid any disruption" in service, according to Microsoft's Wednesday announcement.